Performance: I have no idea, and don't have the time/energy to test the multitude of scenarios.

Maybe I should have been more descriptive. I guess one can measure performance in terms of speed, memory usage, etc. - indeed, that is probably the most popular meaning of the word in computers. But, I meant performance in terms of effectiveness (I should have just said effectiveness). And this question is the most important.

How effective is each in doing its job - i.e., keeping the bad guys out?

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And the WORD was made flesh, and dwelt among us. (John 1:14)